An energy flow study of a double-deck tunnel under quasi-static and harmonic excitations
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This paper presents a comparison between the vibration energy flow radiated by a double-deck tunnel and the one radiated by a simple tunnel when both are excited by constant or by harmonic moving loads. For both cases, the radiated energy is computed using a three-dimensional semi-analytical model of the system. The total energy radiated upwards is presented for a wide range of load speeds, when a constant moving load is considered, and for a wide range of excitation frequencies, when the excitation is a harmonic moving load. Significant differences have been obtained, first, for constant loads moving at very high speeds and, second, for harmonic loads moving at typical speeds for underground trains.
© 2016. This version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
CitationClot, A., Romeu, J., Arcos, R. An energy flow study of a double-deck tunnel under quasi-static and harmonic excitations. "Soil dynamics and earthquake engineering (1984)", Octubre 2016, vol. 89, p. 1-4.